Product: HGR15 / HGR20 square linear guide rail system What you get 2 x HGR linear rails (HGR15 or HGR20) 4 x slider blocks (selectable: HGH15CA / HGH20CA or flange type HGW15CC / HGW20CC) Linear bearings manufactured from high-quality bearing steel Key benefits — why this solves your problem Precise, smooth linear motion: square HGR guide rails with HGH/HGW blocks reduce friction and runout for improved positioning accuracy. High load capacity and durability: hardened bearing steel construction resists wear and extends service life under continuous or heavy-duty use. Versatile mounting options: choose carriage types HGH-CA for standard sliders or HGW-CC flange blocks for compact flange mounting in confined assemblies. Simplifies assembly and maintenance: standardized HGR/HGH/HGW dimensions make replacement and system upgrades straightforward. Function and compatibility Function: provides guided linear motion for equipment and tooling using recirculating ball or roller bearing slider blocks (HGH/HGW series) on HGR square rails. Compatibility: designed for HGR15 and HGR20 systems and their corresponding HGH15CA / HGH20CA and HGW15CC / HGW20CC carriage blocks. Use directly in machines or retrofit into existing HGR-based stages. Material and performance highlights Bearing steel construction for sliders and rails ensures consistent hardness, wear resistance, and dimensional stability. Engineered for low friction, smooth travel, and reliable repeatability in linear motion applications. Practical applications (examples) CNC routers, milling tables, and linear axes where precise straight-line motion and repeatability are required. Automation and robotic gantries for pick-and-place, inspection, or assembly lines using HGR rails and flange-mounted HGW blocks for compact layouts. Laboratory instrumentation, 3D printers, and custom linear stages where stable guidance and long life are needed. Ordering note Package includes 2 rails and 4 slider blocks; ensure you select the correct rail size (HGR15 or HGR20) and the matching slider model (HGH15CA / HGH20CA or HGW15CC / HGW20CC) for your application.